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import { describe, expect, it } from "vitest";
import { configMapToAccess, envToConfigMap } from "./config.js";

describe("envToConfigMap", () => {
  it("maps DISPATCH_API_KEY to provider.openai-compat.apiKey", () => {
    const result = envToConfigMap({ DISPATCH_API_KEY: "sk-test-123" });
    expect(result["provider.openai-compat.apiKey"]).toBe("sk-test-123");
  });

  it("maps DISPATCH_BASE_URL to provider.openai-compat.baseURL", () => {
    const result = envToConfigMap({ DISPATCH_BASE_URL: "https://custom.api/v1" });
    expect(result["provider.openai-compat.baseURL"]).toBe("https://custom.api/v1");
  });

  it("maps DISPATCH_MODEL to provider.openai-compat.model", () => {
    const result = envToConfigMap({ DISPATCH_MODEL: "gpt-4" });
    expect(result["provider.openai-compat.model"]).toBe("gpt-4");
  });

  it("maps all three env vars together", () => {
    const result = envToConfigMap({
      DISPATCH_API_KEY: "key",
      DISPATCH_BASE_URL: "https://api.example.com",
      DISPATCH_MODEL: "my-model",
    });
    expect(result).toEqual({
      "provider.openai-compat.apiKey": "key",
      "provider.openai-compat.baseURL": "https://api.example.com",
      "provider.openai-compat.model": "my-model",
    });
  });

  it("returns empty map when no relevant env vars are set", () => {
    const result = envToConfigMap({ HOME: "/home/user", PATH: "/usr/bin" });
    expect(result).toEqual({});
  });

  it("skips undefined env vars", () => {
    const result = envToConfigMap({ DISPATCH_API_KEY: undefined });
    expect(result).toEqual({});
  });

  it("includes only set vars when some are missing", () => {
    const result = envToConfigMap({
      DISPATCH_API_KEY: "key",
      DISPATCH_MODEL: undefined,
    });
    expect(result).toEqual({
      "provider.openai-compat.apiKey": "key",
    });
    expect(result["provider.openai-compat.baseURL"]).toBeUndefined();
    expect(result["provider.openai-compat.model"]).toBeUndefined();
  });

  it("maps SURFACE_WS_PORT to surfaceWsPort", () => {
    const result = envToConfigMap({ SURFACE_WS_PORT: "24206" });
    expect(result.surfaceWsPort).toBe(24206);
  });

  it("ignores a non-numeric SURFACE_WS_PORT", () => {
    const result = envToConfigMap({ SURFACE_WS_PORT: "abc" });
    expect(result.surfaceWsPort).toBeUndefined();
  });

  it("ignores a non-positive SURFACE_WS_PORT", () => {
    const result = envToConfigMap({ SURFACE_WS_PORT: "0" });
    expect(result.surfaceWsPort).toBeUndefined();
  });

  it("omits surfaceWsPort when SURFACE_WS_PORT is unset", () => {
    const result = envToConfigMap({});
    expect(result.surfaceWsPort).toBeUndefined();
  });
});

describe("configMapToAccess", () => {
  it("returns value for existing key", () => {
    const access = configMapToAccess({ "provider.openai-compat.apiKey": "sk-123" });
    expect(access.get("provider.openai-compat.apiKey")).toBe("sk-123");
  });

  it("returns undefined for missing key", () => {
    const access = configMapToAccess({});
    expect(access.get("nonexistent")).toBeUndefined();
  });

  it("returns typed value", () => {
    const access = configMapToAccess({ "some.number": 42 });
    expect(access.get<number>("some.number")).toBe(42);
  });

  it("getAll returns the full map", () => {
    const map = { a: 1, b: "two" };
    const access = configMapToAccess(map);
    expect(access.getAll()).toEqual(map);
  });
});